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add VectorDimensionsT metaprogram to detect vector dimensions in C++98

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This commit is contained in:
Janis Born
2015-11-23 15:33:14 +01:00
parent b31589b15f
commit 4c9a6ba5a4
2 changed files with 87 additions and 7 deletions
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80
src/OpenMesh/Core/Geometry/VectorDimensionsT.hh Normal file
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@@ -0,0 +1,80 @@
/* ========================================================================= *
* *
* OpenMesh *
* Copyright (c) 2001-2015, RWTH-Aachen University *
* Department of Computer Graphics and Multimedia *
* All rights reserved. *
* www.openmesh.org *
* *
*---------------------------------------------------------------------------*
* This file is part of OpenMesh. *
*---------------------------------------------------------------------------*
* *
* Redistribution and use in source and binary forms, with or without *
* modification, are permitted provided that the following conditions *
* are met: *
* *
* 1. Redistributions of source code must retain the above copyright notice, *
* this list of conditions and the following disclaimer. *
* *
* 2. Redistributions in binary form must reproduce the above copyright *
* notice, this list of conditions and the following disclaimer in the *
* documentation and/or other materials provided with the distribution. *
* *
* 3. Neither the name of the copyright holder nor the names of its *
* contributors may be used to endorse or promote products derived from *
* this software without specific prior written permission. *
* *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
* *
* ========================================================================= */
//=============================================================================
//
// CLASS VectorDimensionsT
//
//=============================================================================
#ifndef DOXYGEN
#ifndef OPENMESH_VECTOR_DIMENSIONS_HH
#define OPENMESH_VECTOR_DIMENSIONS_HH
//== INCLUDES =================================================================
#include <OpenMesh/Core/System/config.h>
#include <OpenMesh/Core/Geometry/VectorT.hh>
//== NAMESPACES ===============================================================
namespace OpenMesh {
//== CLASS DEFINITION =========================================================
template<typename Vector>
struct VectorDimensionsT {};
template<typename Scalar, int Dim>
struct VectorDimensionsT<OpenMesh::VectorT<Scalar, Dim>> {
enum {
value = Dim
};
};
//=============================================================================
} // namespace OpenMesh
//=============================================================================
#endif // OPENMESH_VECTOR_DIMENSIONS_HH defined
//=============================================================================
#endif // DOXYGEN

14
src/OpenMesh/Core/Mesh/PolyMeshT.cc
View File

@@ -61,6 +61,7 @@
#include <OpenMesh/Core/Mesh/PolyMeshT.hh>
#include <OpenMesh/Core/Geometry/LoopSchemeMaskT.hh>
#include <OpenMesh/Core/Geometry/VectorDimensionsT.hh>
#include <OpenMesh/Core/Utils/GenProg.hh>
#include <OpenMesh/Core/Utils/vector_cast.hh>
#include <OpenMesh/Core/System/omstream.hh>
@@ -101,7 +102,7 @@ typename PolyMeshT<Kernel>::Normal
PolyMeshT<Kernel>::calc_face_normal(FaceHandle _fh) const
{
return calc_face_normal_impl(_fh, typename GenProg::IF<
PolyMeshT<Kernel>::Point::size() == 3,
VectorDimensionsT<PolyMeshT<Kernel>::Point>::value == 3,
PointIs3DTag,
PointIsNot3DTag
>::Result());
@@ -155,7 +156,7 @@ typename PolyMeshT<Kernel>::Normal
PolyMeshT<Kernel>::calc_face_normal_impl(FaceHandle, PointIsNot3DTag) const
{
// Dummy fallback implementation
return Normal(0);
return Normal(typename Normal::value_type(0));
}
//-----------------------------------------------------------------------------
@@ -168,7 +169,7 @@ calc_face_normal(const Point& _p0,
const Point& _p2) const
{
return calc_face_normal_impl(_p0, _p1, _p2, typename GenProg::IF<
PolyMeshT<Kernel>::Point::size() == 3,
VectorDimensionsT<PolyMeshT<Kernel>::Point>::value == 3,
PointIs3DTag,
PointIsNot3DTag
>::Result());
@@ -209,10 +210,9 @@ calc_face_normal_impl(const Point& _p0,
template <class Kernel>
typename PolyMeshT<Kernel>::Normal
PolyMeshT<Kernel>::
calc_face_normal_impl(const Point&, const Point&, const Point&, PointIsNot3DTag) const
PolyMeshT<Kernel>::calc_face_normal_impl(const Point&, const Point&, const Point&, PointIsNot3DTag) const
{
return Normal(0);
return Normal(typename Normal::value_type(0));
}
//-----------------------------------------------------------------------------
@@ -241,7 +241,7 @@ PolyMeshT<Kernel>::
update_normals()
{
// Face normals are required to compute the vertex and the halfedge normals
if (Kernel::has_face_normals() ) {
if (Kernel::has_face_normals() ) {
update_face_normals();
if (Kernel::has_vertex_normals() ) update_vertex_normals();